- The previous commit (- r15193) for 2pncmin model was done by mistake. Please excuse my misake.

- Properties for models 2pnc and 2pncmin modified so that they can be used for both box and cc methods.
- The Chemistry property is removed from volume veriables so it has to be checked for reaction test cases first.
- The minimum prorsity after mineralization can be selected now from spatial parameters.


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@15195 2fb0f335-1f38-0410-981e-8018bf24f1b0